Title :
Boundary integral equation approach to multi-mode Y-Matrix characterization of multi-ridged sections in circular waveguide
Author :
Schroeder, W. ; Guglielmi, M.
Author_Institution :
Dept. of Electr. Eng., Duisburg Univ., Germany
Abstract :
Aiming at an accurate and effective CAD procedure for circular waveguide (CW) dual-mode filters without tuning screws, the boundary integral equation method (BIEM) is applied to TM/TE mode analysis of Multi-Ridge circular waveguide (MRCW) and evaluation of CW-MRCW mode coupling coefficients to obtain the Multi-Mode network (Y-Matrix) representation (MMNR) of CW-MRCW transitions. A novel multiple eigenvalue search algorithm assures completeness of the modal spectrum up to large mode indices (>100) in the presence of accidental degeneracies and clusters of eigenvalues.
Keywords :
boundary integral equations; circular waveguides; eigenvalues and eigenfunctions; matrix algebra; ridge waveguides; waveguide theory; CAD; CW-MRCW transitions; TM/TE modal spectrum; Y-matrix; boundary integral equation; dual-mode filter; mode coupling coefficients; multimode network representation; multiple eigenvalue search algorithm; multiridge circular waveguide; tuning; Clustering algorithms; Cutoff frequency; Eigenvalues and eigenfunctions; Electromagnetic waveguides; Fasteners; Filters; Integral equations; Space technology; Tellurium; Transmission line matrix methods;
Conference_Titel :
Microwave Symposium Digest, 1996., IEEE MTT-S International
Conference_Location :
San Francisco, CA, USA
Print_ISBN :
0-7803-3246-6
DOI :
10.1109/MWSYM.1996.512306
